I have an older Makita reciprocating saw and need a trigger for it, it is 110 volt corded, but the aluminum info plate is on the top of the handle of saw and is all scraped up and cannot read any of the info on it, it has the blue handle assembly and the rest is thick cast aluminum..how can I find out what model it is so I can order parts, I love the saw it has worked great and had it 7 yrs, and my dad was a plumber and used it many yrs..so I would love to be able to use it again, thanks for your help, Sincerely, Bruce.